Synthesis and Characterization of 2D Molybdenum Carbide (MXene)

Large scale synthesis and delamination of 2D Mo 2 CT x (where T is a surface termination group) has been achieved by selectively etching gallium from the recently discovered nanolaminated, ternary transition metal carbide Mo 2 Ga 2 C. Different synthesis and delamination routes result in different flake morphologies. The resistivity of free‐standing Mo 2 CT x films increases by an order of magnitude as the temperature is reduced from 300 to 10 K, suggesting semiconductor‐like behavior of this MXene, in contrast to Ti 3 C 2 T x which exhibits metallic behavior. At 10 K, the magnetoresistance is positive. Additionally, changes in electronic transport are observed upon annealing of the films. When 2 μm thick…

• UD
  U.S. Department of Energy
• B
  Battelle
• U
  UT-Battelle
• SF
  Stiftelsen för Strategisk Forskning
• V
  Vetenskapsrådet

  Awards: 2012-4430, 621-2012-4430
• AR
  Army Research Office

  Awards: W911NF-15-1-, W911NF-15-1-0133, W911NF
• OR
  Oak Ridge National Laboratory